[coldblack®] Light=colored textiles reflect both visible and invisible rays of sunlight, meaning both heat and light. Dark colored textiles absorb both types of rays and therefore absorb heat. coldblack® reduces this absorption of heat rays, particularly in the case of darker colors and in all types of textiles. The result is tangibly better heat management because textiles finished with colorblack® heat up less in all colors compared with materials without colorblack® finish.